Strategic Acquisition Adds Award-Winning Building Systems and Sustainability Expertise to Pennoni’s Integrated Services, Fueling Long-Term Growth
PHILADELPHIA—Pennoni, a multidisciplinary engineering firm headquartered in Philadelphia, is excited to share it has acquired the assets of Dagher Engineering, an award-winning building systems engineering and sustainability consulting firm based in New York City. The transaction, effective June 30, 2025, will integrate Dagher’s capabilities into Pennoni’s operations. Dagher Engineering will immediately operate as “The Dagher Engineering Division of Pennoni,” and its full staff will join the firm. This strategic move significantly broadens Pennoni’s service offerings and presence in the New York market, reflecting the firm’s long-term vision for growth and innovation in the region.
Dagher Engineering’s portfolio complements and extends Pennoni’s core services beyond traditional mechanical, electrical and plumbing (MEP) services. Based at 29 Broadway in Manhattan, Dagher is recognized as an award-winning building systems engineering and sustainability consulting firm. Its comprehensive offerings include both fundamental building systems design and advanced high-performance services. Specifically, Dagher’s expertise includes:
- HVAC, electrical, plumbing, fire protection and alarm, and low-voltage systems engineering
- Passive House consulting, energy modeling and computational fluid dynamics (CFD) analysis
- Commissioning and start-up services
- LEED certification and sustainability consulting
- Special & Progress Inspections (for New York City projects)
“We are thrilled to welcome Dagher Engineering’s talented team to the Pennoni family. Dagher’s renowned expertise in high-performance building systems and sustainable design will significantly deepen our presence in New York, complementing our existing services beyond core MEP. Together, we will deliver integrated, future-ready solutions that drive client success and position us for long-term growth,” says Dave DeLizza, PE, president and CEO of Pennoni.
These expanded capabilities complement Pennoni’s existing MEP practice, enabling the combined firm to deliver fully integrated, high-performance building solutions that drive client value and long-term resilience. Morrissey Goodale, a specialized management consulting and research firm exclusively serving the architecture, engineering, and environmental consulting industries, initiated the transaction and advised Dagher Engineering.
Pennoni’s existing New York office at 130 West 29th Street will remain the firm’s Manhattan headquarters, and Dagher’s office at 29 Broadway will serve as a second Pennoni office. The full Dagher Engineering team will join Pennoni, bringing their deep local expertise. The Dagher Engineering Division of Pennoni will integrate these resources to better serve clients statewide, blending Pennoni’s broad civil and infrastructure capabilities with Dagher’s specialized building systems and sustainability expertise.
“This is an exciting new chapter for Dagher Engineering. Joining forces with Pennoni gives our team access to a broader platform to deliver the efficient, sustainable solutions our clients demand. Pennoni’s robust resources and shared commitment to innovation and sustainability make this a natural partnership. Together, we will be able to tackle ambitious projects and provide even greater value to our clients and communities,” added Elias Dagher, PE, LEED AP, CPHC, senior principal at Dagher Engineering.
This acquisition positions Pennoni to more fully meet the growing demand for integrated, sustainable building solutions in New York and beyond, fully in line with the firm’s strategic vision for long-term growth and engineering excellence.